Final answer:
To enhance supply in the tree harvesting scenario, sustainable forest management practices should be implemented, while exploring alternative materials or sources for tree products can help decrease demand.
Step-by-step explanation:
To enhance supply in the tree harvesting scenario, you could implement sustainable forest management practices. This involves planting new trees after harvest and ensuring they are given enough time to grow before being harvested again. By maintaining a cycle of planting and harvesting, you can ensure a continuous supply of trees for the future.
To decrease demand, you could explore alternative materials or sources for the products typically derived from trees. For example, you could promote the use of recycled materials or incentivize the development of wood alternatives made from renewable resources like bamboo. By diversifying the market and reducing the reliance on traditional tree products, you can help decrease the demand for tree harvesting.